What was found
EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M1670 DID NOT TURN ON. REPLACED THE POWER SUPPLY BATTERY PACK M1670 IAW AMM 33-51-06-960-805, AND PERFORMED GOOD EMERGENCY LIGHTS - OPS TEST IAW AMM 33-51-00-710-801.
- Difficulty date
- December 21, 2025
- Submitted
- December 29, 2025
- Operation
- Air carrier
- Aircraft
- N943WN
- Make and model
- Boeing 7377H4
- Aircraft serial
- 36913
- Aircraft time
- 51,234 hours, 31,377 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Condition
- Inoperative
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.